NGC 1448 explained

NGC 1448
Credit:	NASA/STScI/WikiSky
Epoch:	J2000
Type:	SAcd ^[1]
Dist Ly:	56.5 ± 7.6 Mly (17.3 ± 2.3 Mpc)
Z:	1168 ± 2 km/s
Appmag V:	10.7
Size V:	7.6 × 1.7
Constellation Name:	Horologium
Names:	NGC 1457, PGC 13727

NGC 1448 or NGC 1457 is an unbarred spiral galaxy seen nearly edge-on in the constellation Horologium. It is at a distance of 55 million light years from Earth. It was discovered by John Herschel in 1835.

From the spectral analysis of SN 2001el, over a dozen diffuse interstellar bands were discovered in NGC 1448 – one of the few cases that these bands were observed outside of the Milky Way. However, the bands were significantly weaker at SN 2003hn.^[2]

In January 2017 it was announced that evidence for a supermassive black hole in NGC 1448 had been found in the center of the galaxy.^[3]

The galaxy belongs to the NGC 1433 group,^[4] part of the Doradus cloud of galaxies.

Supernovae

Six supernovae have been discovered in NGC 1448: SN 1983S (type II, mag. 14.5),^[5] SN 2001el (type Ia, mag. 14.5),^[6] SN 2003hn (type II, mag. 14.1),^[7] SN 2014df (type Ib, mag. 14),^[8] SN 2020zbv (type IIP, mag. 18.8),^[9] and SN 2021pit (type Ia, mag. 12.3).^[10]

Notes and References

1. Web site: NASA/IPAC Extragalactic Database. Results for NGC 1448. 2016-01-18.
2. J. Sollerman . N. Cox . S. Mattila . P. Ehrenfreund . L. Kaper . B. Leibundgut . P. Lundqvist . Diffuse Interstellar Bands in NGC 1448. Astronomy and Astrophysics. January 2005. 429. 2. 559–567. 10.1051/0004-6361:20041465. 16 January 2016. astro-ph/0409340 . 2005A&A...429..559S . 18036448 .
3. http://news.sky.com/story/two-monster-black-holes-found-lurking-in-nearby-galaxies-10721399 Two monster black holes found lurking in nearby galaxies
4. Dmitry Makarov. Igor Karachentsev. Galaxy groups and clouds in the local (z~ 0.01) Universe. MNRAS. 2011. 412. 4. 2498–2520. 10.1111/j.1365-2966.2010.18071.x. 1 January 2016. 1011.6277. 2011MNRAS.412.2498M. 119194025. 31 January 2016. https://web.archive.org/web/20160131020344/http://www.sao.ru/hq/dim/groups/galaxies.dat. dead.
5. https://www.wis-tns.org/object/1983S Transient Name Server entry for SN 1983S.
6. https://www.wis-tns.org/object/2001el Transient Name Server entry for SN 2001el.
7. https://www.wis-tns.org/object/2003hn Transient Name Server entry for SN 2003hn.
8. https://www.wis-tns.org/object/2014df Transient Name Server entry for SN 2014df.
9. https://www.wis-tns.org/object/2020zbv Transient Name Server entry for SN 2020zbv.
10. http://www.cbat.eps.harvard.edu/lists/Supernovae.html List of Supernovae